Wrench



Nov. 8, 1927.

1,648,037 w. WHITE WRENCH Original Filed June 15. 1921 iii/mm flak wuwtoz I 4.11 MM,

Patented Nov. 8, 1927.

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Wit-LIAM warm or w-nran meson, MIC IGAN, ASSIGNOR TO BENJAMIN Wang i on wnaaanrrenon, n neteen. 1 i

Am sia file-11 mm 1. 21, sea mxe sr enew d ane, 1e 192.

i n e re ates; an; mpre d;

m y. i e se f r re n r. re la ing never-slip horseshoe calks,

A still further object of the invention; is

to provide, a device as above described consist ng of; but a f w parts and one which it is believed may be manufactured at a very low cost. I

Various other objects and advantages of my invention will become apparent during the continuance ofth'e following description.

In the drawings Fig. 1 is a view and side elevation showing my invention as in its preferred embodiment,

Fig. 2 is a view in perspective of one element or section of my invention, and

Fig. 3 is a View in perspective of the other element or section of the wrench.

In describing my invention more in detail, 11 and designate the main elements of the wrench, each of which consists of a handle portion 12 and 13, and intermediate portion 1 1 and 15 and a jaw or gripping portion 16 and 17. Each element may be cast in a separate integral piece and afterwards machined (if necessary) into final form.

The intermediate portion of the element 10 joins one end of the handle 13 and lies in a plane at a substantially (SO-degree angle with respect thereto, terminating in the jaw 17. In order to increase the effectiveness of the wrench the jaw 17 extends at a substantially 4e5-degree angle from the intermediate portion 15 and at a substantially GO'degree angle with respect to the longitudinal axis of the handle 13. The intermediate ortion 15 is provided with an opening 18 or the reception of a pivot member hereinafter described, while the inner or engaging face of the aw 17 is corrugated or notched as at 19.

Upon reference to Fig. 3it will be observed that the jaw 17 is substantially twice as thick as the intermediate portion 15 and the handle portion 13, thus providing an upa: which is especially adali ie ll p e e n erm d a e'iibr ai'f t notched as at 21 with inwardly andheoliedly termediate portion 1a an opening 22 standj 'l g. shoulder at its, rear end. and ate the front end (lftll. i termediate ortionf5;- i

from the; handle porti'en 12 and. termin'a s; m t jaw 16 thatj'iscurvedlin sateen; In the are of a circle. The jaw 16 alsoeirtehds at b t nt ly 5-desre angle-W tt It? its inner or engaging face cori' u'ga projectingv teeth; I furthe'n prolvi de in}.

which, when the elements are a sis'emjo'l'ed is; m d: w rt e p h ss 1.8 etthe leme i I and through which is positioned a pivot .member 23 which retains the elements in operative pivotal relation. Like the jaw 17 the jaw 16 is substantially twice the thickness of the intermediate portion 14 and the handle portion 12 so asto form ashoulder 23 at its rear end and at the front end of the intermediate portion 14.

Consequently when the elements are assembled as shown in Fig. 1, the combined thicknesses of the two intermediate portions and handle portions equals the thickness of each of the jaws, thus presenting a device having a substantially regular contour. The intermediate portions 14 and 15 are, moreover, provided with convex bearing edges '24 and 24, respectively, which are engaged by the concave faces of the said shoulders 20 and 23 of the jaws; the said engaged bearing faces of the said shoulders and edges respectively being adapted for relatively sliding contact during the opening and closing movement of the said jaws.

When assembled as shown in Fig. 1, the

'wrench may be easily and quickly manipube used to advantage in connection with never-slip horseshoe calks and the like devices.

From the foregoing it is'believed that the advantages and novel features of my invention will be readily understood and therefore further detailed description is deemed unnecessary.

The lower jaw 16 is in the outer position in relation to the pivot center, and the shorter jaws 17 is in the inner position and rela tion of said jaws. This relation is of importance in that the pull of the handle causes the outer jaw with its inwardly hooking teeth to effectively engage with very slight pressure from the co-operating inner jaw, and presents a comparatively broad curved surface in contact with a pipe or other object being turned. This outer and inner relation is of importance to secure the effective cooperation of the parts when they are manipulated. I

Fromthe description it will be seen that the handles are in side by side relation and of equal length and consequently come into the hand of the user in such manner that they can be readily'and independently manipulated and opened and closed, thereby controlling the action of-the jaws to secure very strong or very gentle action of the gripping teeth, as the work in hand may require.

Having thus fully described by invention what I claim as new and desire to secure by Letters Patent is What is claimed is:

A wrench comprising a pair of pivotally connected complementary members, each of which embodies a flat vertically disposed handle portion,a jaw portion inclined to the axis of the handle, and an integral connecting portion between the said handle and jaw portions and lying in the plane of the said handle, the said connecting portions each oblique to the said jaw portions respectively with respect to the handle, the jaws of the said members being of unequal length with respect to their respective gripping surfaces, the outer jaw being provided with inwardlyprojecting serrations and the inner jaw with outwardly-projecting serrations, whereby the outer jaw extends forwardly over and beyond the inner jaw, both said jaws being provided with shoulders at the connecting portions, the said connecting portions being adapted for relative sliding movement during the opening and closing movement of the said jaws.

In testimony whereof I affix my signature.

WILLIAM WHITE. 

